Ronnie O'Sullivan is into the quarter-finals of the World Grand Prix - but hated his last 16 match so much that he reiterated his plan to retire from the sport.In a scrappy affair, O'Sullivan beat Iranian player Hossein Vafaei 4-1 in Coventry, rounding off matters with breaks of 107 and 81 in the final two frames.The six-time world champion was left anything but happy by his display though, chastising himself for "stinking" the place out."That was as bad as it’s ever been, the first three frames.
If he’d have played alright it would have been 4-0, done and dusted," he told ITV4 afterwards."I’m into the next round, that’s about all I can say.‘If I was to play like that, you have to be honest with yourself, I’m not going to get any better.
Read more on dailystar.co.uk